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2010 Condition, partial watershed <br />This condition is described on Figures Exh. 7 -14R -1 and Exh. 7- 14R -2. <br />Subwatersheds A, B, C and R, three of which are immediately above Prospect <br />Pond, are undisturbed, and will remain so for the entire duration of the plan <br />described here. The reclaimed areas in subwatersheds L, M, N, Q2, Q1, X and Z <br />are all in greater than 3 year vegetation, while the close -in subwatersheds D, E <br />and F are in 1 -2 year vegetation. Further upstream watersheds K, Y, I and J are <br />topsoiled and seeded. All of these reclaimed areas except L, which is already in <br />greater than 3 years reclamation status, report through one or more of the stock <br />tanks. The other subwatersheds are intercepted and re- directed to the East Pit. <br />Overall, 550.7 acres are tributary to the sediment pond at this stage. Areas not <br />tributary due to interception by the pit or the diversion ditches are called out on <br />Figures Exh. 7 -14R -1 and Exh. 7 -14R -2 as "excluded." <br />The SEDCAD modeling shows the runoff volume from the 10 year, 24 hour <br />storm to be 4.74 acre feet, and the modeled outflow from Prospect Pond meets the <br />settleable solids requirement. The pool in Prospect Pond does not reach the <br />emergency spillway, and peaks about 1.77 feet below it. <br />2012 Condition, partial watershed <br />This condition is described on Figures Exh. 7 -14R -3 and Exh. 7- 14R -4. <br />Reclaimed areas in subwatersheds D, E and F are now been added to the greater <br />than 3 year reclamation status, I, J and K have moved into the 1 -2 year status. <br />Subwatershed H is now reporting, and is in 1 -2 year status. Subwatersheds O and <br />P are also now reporting, and are in the topsoiled and seeded status. Four <br />subwatersheds (W, U, T and V) remain intercepted by the pit and are not <br />reporting. Overall, 625.7 acres are now tributary to the sediment pond, with the <br />rest being intercepted directly by the active pit or by upstream diversion ditches. <br />The SEDCAD modeling shows the runoff volume from the 10 year, 24 hour <br />storm is 4.78 acre feet, and the modeled outflow from Prospect Pond meets the <br />settleable solids requirement. The pool in Prospect Pond does not reach the <br />emergency spillway, and peaks about 1.66 feet below it. <br />2 017 Condition, Full Watershed <br />This condition is described on Figures Exh. 7 -14R -5 and Exh. 7- 14R -6. All <br />reclaimed areas are in greater than 3 year reclamation condition except <br />subwatersheds U and V which are now at reclamation 1 -2 years, and <br />subwatersheds S, T and W which are still in disturbed status. At this stage, all <br />711.1 acres of the watershed are now tributary to the sediment pond. This <br />condition represents the worst case of the three 10 year, 24 hour models <br />presented. <br />Exh. 7 -14R -3 <br />Revision Date: 11/3/10 <br />Revision No. TR -87 <br />